Numbering over 30 million items and spanning more than 1,000 years of Western performing arts history and practice, the Music Division's archival holdings include performing arts and literary manuscripts, iconography, musical instruments, published and unpublished copyright deposits, and over 800 special collections in the performing arts. It is the nations oldest federal cultural institution and the worlds largest library, with more than 158 million items in its physical collections (including books, manuscripts, prints, photos, film, video, and sound recordings) and over 37 million items online.